High Priority
=============

DB
--
  - Add action APIs
  - Revise action add/remove dependencies APIs
  - Make sure cluster-policy association is deleted when a cluster is deleted
  - Add field size to cluster table
  - Modify node_set_status to check/update cluster status
  - Add field cluster_id to event table so that query by cluster is easier

ENGINE
------
  - cleanse scheduler module
  - complete parser logic, construct profile/policy objects there?

DRIVER
------
  - complete Heat stack driver [Qiming]


Middle Priority
===============

DB
--
  - Add test cases for policy_delete with 'force' set to True

ENGINE
------

  - Design and implement dynamical plugin loading mechanism that allows 
    loading plugins from any paths

OSLO
----

  - Migrate to oslo.log
  - Migrate to oslo.context


Low Priority
============

TEST
----
  - Add test case in db cluster to test that cluster-policy association is
    deleted when we delete a cluster
  - Add test case to engine/parser
  - Add test case to engine/registry
  - Add test case to engine/environment